rust-nasm-rs/0001-nasm_rs-Force-the-dwarf-debug-for-elf-targets.patch

From 3f711947d749ecdfbbec5af236e97d5b760b7710 Mon Sep 17 00:00:00 2001
From: Luca Barbato <lu_zero@gentoo.org>
Date: Tue, 10 Dec 2019 11:44:19 +0100
Subject: [PATCH] nasm_rs: Force the dwarf debug for elf targets

---
 src/lib.rs | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index eb032a0a0..c48a84efc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -9,35 +9,35 @@ use std::process::Stdio;
 use std::path::{Path, PathBuf};
 use std::ffi::OsString;
 
-fn x86_triple(os: &str) -> &'static str {
+fn x86_triple(os: &str) -> (&'static str, &'static str) {
     match os {
-        "darwin" | "ios" => "-fmacho32",
-        "windows" => "-fwin32",
-        _ => "-felf32"
+        "darwin" => ("-fmacho32", "-g"),
+        "windows" => ("-fwin32", "-g"),
+        _ => ("-felf32", "-gdwarf"),
     }
 }
 
-fn x86_64_triple(os: &str) -> &'static str {
+fn x86_64_triple(os: &str) -> (&'static str, &'static str) {
     match os {
-        "darwin" | "ios" => "-fmacho64",
-        "windows" => "-fwin64",
-        _ => "-felf64"
+        "darwin" => ("-fmacho64", "-g"),
+        "windows" => ("-fwin64", "-g"),
+        _ => ("-felf64", "-gdwarf"),
     }
 }
 
-fn parse_triple(trip: &str) -> &'static str {
+fn parse_triple(trip: &str) -> (&'static str, &'static str) {
     let parts = trip.split('-').collect::<Vec<_>>();
     // ARCH-VENDOR-OS-ENVIRONMENT
     // or ARCH-VENDOR-OS
     // we don't care about environ so doesn't matter if triple doesn't have it
     if parts.len() < 3 {
-        return ""
+        return ("", "");
     }
 
     match parts[0] {
         "x86_64" => x86_64_triple(parts[2]),
         "x86" | "i386" | "i586" | "i686" => x86_triple(parts[2]),
-        _ => ""
+        _ => ("", ""),
     }
 }
 
@@ -228,10 +228,11 @@ impl Build {
     }
 
     fn get_args(&self, target: &str) -> Vec<&str> {
-        let mut args = vec![parse_triple(&target)];
+        let (arch_flag, debug_flag) = parse_triple(&target);
+        let mut args = vec![arch_flag];
 
         if self.debug {
-            args.push("-g");
+            args.push(debug_flag);
         }
 
         for arg in &self.flags {